Accuracy

imidazole    601 Imidazole

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    #  Species Formula
   591 DiazomethaneCH2N2
   592 N=N-CH2-CH2N2
   593 MethylhydrazineCH6N2
   594 Cyanogen (Geo)C2N2
   595 CyanogenC2N2
   596 Dimethyldiazene (Geo)C2H6N2
   597 1,1-DimethylhydrazineC2H8N2
   598 1,2-DimethylhydrazineC2H8N2
   599 EthylenediamineC2H8N2
   600 1H-PyrazoleC3H4N2
   601 Imidazole C3H4N2
   602 1,2-PropanediamineC3H10N2
   603 DicyanoacetyleneC4N2
   604 FumaronitrileC4H2N2
   605 1,3-DiazineC4H4N2
   606 PyrazineC4H4N2
   607 PyridazineC4H4N2
   608 SuccinonitrileC4H4N2
   609 2-Methyl-1H-imidazoleC4H6N2
   610 (Dimethylamino) acetonitrileC4H8N2
   611 1,4,5,6-TetrahydropyrimidineC4H8N2


ΔHf: 31.8 kcal/mol,     REF: NIST Chemistry WebBook, NIST Standard Reference Database, No. 69; W. G. Mallard, P. J. Linstrom, Eds., National Institute of Standards and Technology, Gaithersberg, http://webbook.nist.gov/chemistry.
  
 PM7
Imidazole
 H=31.76 HR=NIST
  C     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.39562555 +1    0.0000000 +0    0.0000000 +0     1     0     0
  N     1.39602082 +1  106.1213954 +1    0.0000000 +0     2     1     0
  C     1.39786375 +1  107.1350796 +1   -0.0004915 +1     3     2     1
  N     1.34162938 +1  110.1255913 +1   -0.0041807 +1     4     3     2
  H     1.07238796 +1  129.4971499 +1  179.9988115 +1     1     2     3
  H     1.06804639 +1  122.9423120 +1  179.9994015 +1     2     3     4
  H     0.99307530 +1  127.2985928 +1  179.9998582 +1     3     4     5
  H     1.07536010 +1  123.6666851 +1  179.9989014 +1     4     3     2